侧面爆破粉尘时空分布模拟分析  

Simulation analysis of temporal and spatial distribution of side blasting dust

作　　者：石零[1] 姚芮 严佳宁 罗开阳 常玉锋 安良 胡明华[1] SHI Ling;YAO Rui;YAN Jianing;LUO Kaiyang;CHANG Yufeng;AN Liang;HU Minghua(Hubei Key Laboratory of Industrial Fume and Dust Pollution Control,Wuhan Hubei 430056,China)

机构地区：[1]工业烟尘污染控制湖北省重点实验室(江汉大学),湖北武汉430056

出　　处：《工业安全与环保》2024年第7期90-93,共4页Industrial Safety and Environmental Protection

基　　金：江汉大学校级创新项目(2021kjzx004)。

摘　　要：从开放性细颗粒物污染治理角度出发,建立建筑物拆除爆破产尘的几何计算模型,运用计算流体力学(CFD)工具,对给定环境风速下的建筑物周围压力场和速度场进行了模拟分析,并对侧面折叠爆破粉尘按R-R(Rosin-Rammler)分布,使用气流-粒子双向耦合的DPM模型研究了爆炸粉尘的时空分布。结果表明,下风侧因建筑物存在导致风速、压力急剧变化而产生涡流,涡流是影响爆破粉尘时空分布的关键因素之一。在时间上,爆破粉尘有气流拖曳运动状态和扩散态;在空间上,因重力作用致下部空间的粉尘浓度较大。From the perspective of open particulate matter pollution control,a geometry model of blasting dust is established,and the pressure and velocity fields generated by building blasting are simulated and analyzed using CFD.Besides,considering the blasting dust according to the R-R(Rosin-Rammler)distribution,an assumed ambient wind velocity was selected to study the space-time distribution of blasting dust using a fluid-particle double-coupled DPM model.The results show that there is a region where the velocity and pressure change sharply on the side of the outgoing wind,thereby,inducing vorticity,which is a key factor affecting the space-time distribution.In terms of time,there are two movement states of blasting dust:dragged-along movement and diffusion.In terms of space,the concentration of dust is higher in lower areas.

关 键 词：爆破粉尘时空分布 运动分析 开放性爆尘 空气污染治理 

分 类 号：TB41[一般工业技术] X513[环境科学与工程—环境工程]